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lisabon 2012 [21]
3 years ago
5

Four multiple choice science questions.

Physics
2 answers:
mixas84 [53]3 years ago
7 0
A
c
a
c
just from memory hope this helps

Sati [7]3 years ago
4 0
1. Jupiter (being the largest planet and all)
2. Ice and Rock
3. None of the above
4. Uranus
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Velocities of two bodies A and B are given in vectors notation as va =i+2j-3k and Vb=3i+2j-k what will be the relative velocity
ArbitrLikvidat [17]

Answer:

V_{B/A}=2i+2k

Explanation:

The relative velocity can be calculated by means of the difference between vector B minus vector A.

V_{A}=i+2j-3k\\V_{B}=3i+2j-k\\V_{B}-V_{A}=(3-1)i + (2-2)j+(-1-(-3))k\\V_{B/A}=2i+2k

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3 years ago
An arrow leaves a bow at 60 m/s at an angle of 30 degrees to the horizon.
Orlov [11]

Answer: 11

Explanation:

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2 years ago
How come walking converts chemical energy into mechanical energy
tekilochka [14]
Chemical energy (calories) is converted by your body walking on the surface into mechanical/kinetic energy
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2 years ago
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Example of energy transfer from potential to kinetic and back
Alex_Xolod [135]

Swimmer and Divers. The Potential energy is transferred into Kinetic energy, and allows the diver to submerge into the water. The Kinetic energy then allows the diver to submerge and dive into the water. Potential energy however, is needed to allow the diver to get back out of the water after diving to get up and go and dive again, and then the Kinetic energy is transferred back to Potential energy to repeat the process.

Hope :) -Emilie Xo this is right and it helps! Xo

5 0
2 years ago
Match the major muscle group with its functional role.
Naily [24]

Answer:

Abdominal

Sitting up, postural alignment

Biceps

Lifting, pulling

Deltoids

Overhead lifting

Erector Spinae

Postural alignment

Gastronemius & Soleus

Push off for walking, standing on tiptoes

Gluteus

Climbing stairs, walking, standing up

Hamstrings

Walking

Latissimus Dorsi & Rhomboids

Postural alignment, pulling open a door

Obliques

Rotation and side flexion of body

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Quadriceps

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Trapezius

Moves head sideways

Triceps

Pushing

God bless you. Because my soul almost left my body when i had to do this.

7 0
2 years ago
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